National Weather Service United States Department of Commerce

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Use the new Winter Storm Severity Index (WSSI) to find potential winter impacts for your community. Expected winter storms are given an 'impact ranking' in 6 categories, ranging from 'No Impacts' to 'Extreme Impacts'. This product combines forecasts such as snow amount, snow load, and blowing snow to come up with an all-encompassing forecast.